nodejs 0.9.5 requires libuv.so.0.9.4, which is provided by libuv-0.9.4-0.1.gitdc559a5.fc19. However, the libuv version built in rawhide is 0.9.7, which means nodejs cannot satisfy its dependencies. All builds that require nodejs-devel (every Node.js package) are failing.
After discussion with sgallagh, the mass rebuild was the reason that 0.9.7 sneaked in. Now fixed :)
That version was broken in Rawhide and I had untagged it. Looks like the mass-rebuild went ahead and rebuilt and tagged the broken version. I've untagged it again and things should be up and running now. Thanks for reporting this.